28051760 has 80 divisors (see below), whose sum is σ = 71995392. Its totient is φ = 10080000.

The previous prime is 28051753. The next prime is 28051799. The reversal of 28051760 is 6715082.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111635 + ... + 111885.

Almost surely, 2^28051760 is an apocalyptic number.

28051760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28051760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35997696).

28051760 is an abundant number, since it is smaller than the sum of its proper divisors (43943632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28051760 is a wasteful number, since it uses less digits than its factorization.

28051760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 28051760 is about 5296.3912242205. The cubic root of 28051760 is about 303.8458937298.

The spelling of 28051760 in words is "twenty-eight million, fifty-one thousand, seven hundred sixty".